How Gross Are Your Flip-Flops? VERY!

Flip-flops are a summer survival tool. On the steamiest days, relief is measured in seconds of breeze between your toes. But should you then go home, wet some medical gauze, and rub vigorously between those same toes, something less savory can be measured: “They’re full of bugs,” biochemist Don Satchell, Ph.D., of Situ Biosciences, tells me, after I mail him samples of what occupied my feet. “It’s totally disgusting.”